Questions and Answers
In demand paging, when is a page brought into memory?
When the page is needed
What is the purpose of the valid-invalid bit associated with each page table entry?
To indicate if the page is memory resident
What is the role of a pager in demand paging?
To bring in only those pages into memory that are needed
What happens if the valid-invalid bit in a page table entry is 'i' during MMU address translation?
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How does demand paging enable sparse address spaces with holes left for growth?
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What is the main benefit of virtual memory?
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What does virtual memory allow in terms of address spaces?
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How is the virtual address space usually organized?
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Which method can be used to implement virtual memory?
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What is the primary reason for using virtual memory?
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What is the main advantage of organizing the logical address space for stack to start at the max logical address and grow 'down' while the heap grows 'up'?
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What is the primary benefit of demand paging compared to bringing the entire process into memory at load time?
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What functionality does the pager implement in demand paging?
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What is the purpose of the valid-invalid bit associated with each page table entry?
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What does the valid–invalid bit being set to 'i' on all page table entries indicate?
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What enables sparse address spaces with holes left for growth and sharing of system libraries in virtual-memory systems?
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What does a lazy swapper do in demand paging?
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What new MMU functionality is needed to implement demand paging effectively?
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When are pages treated no differently from non-demand-paging systems during MMU address translation?
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How does demand paging handle a scenario where a page needed is not in memory?
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What is the primary benefit of using virtual memory?
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What does virtual memory enable in terms of address spaces?
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How is the virtual address space usually organized?
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What is the role of a pager in demand paging?
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What happens if the valid-invalid bit in a page table entry is 'i' during MMU address translation?
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In demand paging, when is a page brought into memory?
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How does demand paging enable sparse address spaces with holes left for growth?
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